Rhodacaridae

Generalised dorsum of Rhodacarus, from here.


Belongs within: Gamasina.

The Rhodacaridae are a group of mostly small, delicate, free-living mites commonly found in deeper soil layers. They are predators of minute animals such as collembolans or nematodes. One genus Tangaroellus is associated with barnacles in intertidal rock fissures in New Zealand (Lindquist et al. 2009).

Characters (from Lindquist et al. 2009): Palpi five-segmented, with separate tibia and tarsus; palptarsal apotele three-timed; legs IV with ten setae on genu (2 2/1, 3/1 1), ten on tibia (2 1/1, 3/1 2); male with sternal setae st5 on sternitigenital shield; female sternal shield fused with metasternal plates so as to include fourth pair of sternal setae; anterior portion of female sternal shield and male sternitigenital shield undifferentiated from more posterior portions.

<==Rhodacaridae [Rhodacarellinae, Rhodacarinae]
    |--Tangaroellus LKW09
    |--Minirhodacarellus minimus (Karg 1961) M96
    |--Protogamasellopsis Evans & Purvis 1987 LKW09, EP87
    |    |--*P. corticalis Evans & Purvis 1987 EP87
    |    `--P. dioscorus (Manson 1972) [=Protogamasellus diocorus] EP87
    |--Heydeniella Richters 1907 ET79
    |    |--*H. crozetensis Richters 1907 ET79
    |    `--H. goei ET79
    |--Rhodacaropsis Willmann 1935 K86
    |    |--R. attenuata Loots 1969 K86
    |    |--R. botosaneanui (Petrova & Beron 1973) [=Rhodacarus (Rhodacaropsis) botosaneanui] FH93
    |    |--R. cubanus (Petrova & Beron 1973) [=Rhodacarus (Rhodacaropsis) cubanus] FH93
    |    `--R. inexpectata Willmann 1935 K86
    |--Rhodacarellus Willmann 1935 K86
    |    |--*R. subterraneus Willmann 1935 ET79
    |    |--R. arcanus Athias-Henriot 1961 H73
    |    |--R. corniculatus Willmann 1935 K86
    |    |--R. silesiacus Willmann 1936 K86
    |    `--R. vervacti K86
    |--Rhodacarus Oudemans 1902 K86
    |    |--*R. roseus Oudemans 1902 ET79
    |    |--R. ancorae Karg 1971 K91
    |    |--R. angustiformis K86
    |    |--R. berresfordi Loots 1969 K86
    |    |--R. calcarulatus Berlese 1921 K86
    |    |--R. clavulatus M96
    |    |--R. coronatus Berlese 1921 K91
    |    |--R. (Multidentorhodacarus) denticulatus Berlese 1920 FH93
    |    |--R. haarlovi AK91
    |    |--R. marksae Domrow 1957 H98
    |    |--R. minimus KA90
    |    |--R. pallidus Hull 1918 K86
    |    `--R. strenzkei Willmann 1957 K86
    |--Afrodacarellus Hurlbutt 1973 H73
    |    |--*A. femoratus Hurlbutt 1973 H73
    |    |--A. camaxiloensis H73
    |    |--A. concavus Hurlbutt 1973 H73
    |    |--A. congoensis [=Afrogamasellus congoensis] H73
    |    |--A. kivuensis [=Afrogamasellus kivuensis] H73
    |    |--A. leleupi [=Afrogamasellus leleupi] H73
    |    |--A. longipodus Hurlbutt 1973 H73
    |    |--A. lunguensis [=Afrogamasellus lunguensis] H73
    |    |--A. lupangaensis Hurlbutt 1973 H73
    |    |--A. machadoi (Loots 1969) [=Afrogamasellus machadoi] H73
    |    |--A. minutus Hurlbutt 1973 H73
    |    |--A. mossi Hurlbutt 1973 H73
    |    |--A. msituni Hurlbutt 1973 H73
    |    |--A. ngorongoroensis Hurlbutt 1973 H73
    |    |--A. novembus Hurlbutt 1973 H73
    |    |--A. pili Hurlbutt 1973 H73
    |    |--A. pocsi Hurlbutt 1973 H73
    |    |--A. reticulatus [=Afrogamasellus reticulatus] H73
    |    |--A. ruwenzoriensis (Loots 1969) [=Afrogamasellus ruwenzoriensis] H73
    |    `--A. uviraensis [=Afrogamasellus uviraensis] H73
    `--Afrogamasellus Loots & Ryke 1968 H73
         |  i. s.: A. lubalensis (Loots 1969) H73
         |         A. mitigatus (Berlese 1924) [=Gamasellus mitigatus] H73
         |--A. succinctus group H73
         |    |--*A. franzi (Ryke & Loots 1966) [=Cyrtolaelaps (Gamasellus) franzi] H73
         |    |--A. franzoides Hurlbutt 1973 H73
         |    |--A. kilimanjaroensis (Ryke & Loots 1966) [=Cyrtolaelaps (Gamasellus) kilimanjaroensis] H73
         |    |--A. mongii Hurlbutt 1973 H73
         |    |--A. quadrisigillatus (Berlese 1916) [=Gamasellus quadrisigillatus] H73
         |    `--A. succinctus (Berlese 1916) [=Gamasellus succinctus] H73
         |--A. luberoensis H73
         |--A. myersi group H73
         |    |--A. bakeri Hurlbutt 1973 H73
         |    |--A. citri Loots 1969 H73
         |    `--A. myersi H73
         |--A. tetrastigma group H73
         |    |--A. celisi H73
         |    |--A. evansi H73
         |    |--A. isthmus Hurlbutt 1973 H73
         |    |--A. kahusiensis H73
         |    |--A. lootsi Hurlbutt 1973 H73
         |    |--A. lyamunguensis Hurlbutt 1973 H73
         |    |--A. muhiensis H73
         |    |--A. nyinabitabaensis H73
         |    |--A. rugegensis H73
         |    |--A. tetrastigma (Berlese 1916) [=Gamasellus tetrastigma, Cyrtolaelaps (Gamasellus) tetrastigma] H73
         |    `--A. uluguruensis Hurlbutt 1973 H73
         `--A. truncatus group H73
              |--A. latigynia Hurlbutt 1973 H73
              |--A. maskamensis (Ryke & Loots 1966) [=Cyrtolaelaps (Gamasellus) maskamensis] H73
              |--A. paratruncatus Hurlbutt 1973 H73
              `--A. truncatus Hurlbutt 1973

*Type species of generic name indicated

REFERENCES

[AK91] Alberti, G., M. Kratzmann, C. Błaszak, H. Streit & U. Blumröder. 1991. Soil mites and acidification: a comparative study of four forest stands near Heidelberg. In: Schuster, R., & P. W. Murphy (eds) The Acari: Reproduction, development and life-history strategies pp. 491–493. Chapman & Hall: London.

[EP87] Evans, G. O., & G. Purvis. 1987. A new ascid mite from St Helena with observations on the Protogamasellus complex (Acari: Mesostigmata). Journal of Natural History 21: 855–861.

[ET79] Evans, G. O., & W. M. Till. 1979. Mesostigmatic mites of Britain and Ireland (Chelicerata: Acari—Parasitiformes). An introduction to their external morphology and classification. Transactions of the Zoological Society of London 35: 139–270.

[FH93] Farrier, M. H., & M. K. Hennessey. 1993. Soil-inhabiting and free-living Mesostigmata (Acari-Parasitiformes) from North America: an annotated checklist with bibliography and index. North Carolina Agricultural Research Service, North Carolina State University, Technical Bulletin 302: i–xvi, 1–408.

[H98] Halliday, R. B. 1998. Mites of Australia: A checklist and bibliography. CSIRO Publishing: Collingwood.

[H73] Hurlbutt, H. W. 1973. The Afrogamasellus Loots and Ryke and Afrodacarellus n. gen. (Acarina: Rhodacaridae) of Tanzania. Acarologia 15 (4): 565–615.

[K91] Koehler, H. H. 1991. A five year study on the secondary succession of Gamasina on a ruderal site: the influence of recultivation. In: Dusbábek, F., & V. Bukva (eds) Modern Acarology: Proceedings of the VIII International Congress of Acarology, held in České Budĕjovice, Czechoslovakia, 6–11 August 1990 vol. 1 pp. 373–383. SPB Academic Publishing: The Hague.

[K86] Krantz, G. W. 1986. Acari: Rhodacaridae. In: Botosaneanu, L. (ed.) Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) pp. 632–634. E. J. Brill/Dr W. Backhuys: Leiden.

[KA90] Krantz, G. W., & B. D. Ainscough. 1990. Acarina: Mesostigmata (Gamasida). In: Dindal, D. L. (ed.) Soil Biology Guide pp. 583–665. John Wiley & Sones: New York.

[LKW09] Lindquist, E. E., G. W. Krantz & D. E. Walter. 2009. Order Mesostigmata. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 124–232. Texas Tech University Press.

[M96] Munderloh, E. 1996. Gamasina (Mesostigmata) in a dune transect at Spiekeroog (Germany, Lower Saxony). In: Mitchell, R., D. J. Horn, G. R. Needham & W. C. Welbourn (eds) Acarology IX vol. 1. Proceedings pp. 589–594. Ohio Biological Survey: Columbus (Ohio).

Last updated: 15 May 2019.

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